transformation version
type: Property
comment: the transformation version is used to detect outdated datasets that must be retransformed because of changes in the modelling.
domain: DataSet
range: positiveInteger

source data creation date
type: Property
domain: DataSet
range: dateTime

source data modification date
type: Property
domain: DataSet
range: dateTime

country
type: ComponentSpecification
comment: The country a dataset references.
attribute: refArea
component required: false
component attachment: DataSet
component attachment: Observation

time
type: ComponentSpecification
dimension: reference date
component required: false

year
type: ComponentSpecification
dimension: reference year
component attachment: DataSet
component attachment: Observation
component required: false

currency
type: ComponentSpecification
attribute: currency
component required: true
component attachment: Observation

reference date
type: Property
type: DimensionProperty
sub property of: refPeriod
comment: the date an observation refers to
domain: Observation
range: date

reference year
type: Property
type: DimensionProperty
sub property of: refPeriod
comment: the year an observation refers to
domain: Observation
range: gYear